BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Stellarhound//city-ics-v1//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Stellarhound — Gantrisch Dark Sky Zone, Switzerland dark-sky nights X-WR-CALDESC:Nights when the Moon leaves Gantrisch Dark Sky Zone\, Switzerl and's dark hours essentially moon-free (moon interference ≤ 15%\, the de ep-sky standard used across stellarhound.com). Deterministic moon & darkne ss geometry via Skyfield + JPL DE440s (city-ics-v1). Cloud cover is not kn owable this far ahead — check the live forecast at https://stellarhound. com/dark-sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm _medium=ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky- zone-switzerland closer to each window. REFRESH-INTERVAL;VALUE=DURATION:P1W X-PUBLISHED-TTL:P1W BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2026-08-08@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20260808 DTEND;VALUE=DATE:20260821 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2026-09-06@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20260906 DTEND;VALUE=DATE:20260919 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2026-10-05@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20261005 DTEND;VALUE=DATE:20261018 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2026-11-03@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20261103 DTEND;VALUE=DATE:20261116 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2026-12-02@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20261202 DTEND;VALUE=DATE:20261216 SUMMARY:Dark-sky window · 14 moon-free nights DESCRIPTION:14 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2026-12-31@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20261231 DTEND;VALUE=DATE:20270114 SUMMARY:Dark-sky window · 14 moon-free nights DESCRIPTION:14 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2027-01-30@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270130 DTEND;VALUE=DATE:20270212 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2027-02-28@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270228 DTEND;VALUE=DATE:20270313 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2027-03-29@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270329 DTEND;VALUE=DATE:20270411 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2027-04-27@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270427 DTEND;VALUE=DATE:20270511 SUMMARY:Dark-sky window · 14 moon-free nights DESCRIPTION:14 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2027-05-28@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270528 DTEND;VALUE=DATE:20270610 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2027-06-29@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270629 DTEND;VALUE=DATE:20270711 SUMMARY:Dark-sky window · 12 moon-free nights DESCRIPTION:12 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2027-07-29@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270729 DTEND;VALUE=DATE:20270810 SUMMARY:Dark-sky window · 12 moon-free nights DESCRIPTION:12 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2027-08-27@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270827 DTEND;VALUE=DATE:20270908 SUMMARY:Dark-sky window · 12 moon-free nights DESCRIPTION:12 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2027-09-25@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20270925 DTEND;VALUE=DATE:20271007 SUMMARY:Dark-sky window · 12 moon-free nights DESCRIPTION:12 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2027-10-24@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20271024 DTEND;VALUE=DATE:20271105 SUMMARY:Dark-sky window · 12 moon-free nights DESCRIPTION:12 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2027-11-22@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20271122 DTEND;VALUE=DATE:20271205 SUMMARY:Dark-sky window · 13 moon-free nights DESCRIPTION:13 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT BEGIN:VEVENT UID:dark-site-window-gantrisch-dark-sky-zone-switzerland-2027-12-21@stellar hound.com DTSTAMP:20260719T000000Z DTSTART;VALUE=DATE:20271221 DTEND;VALUE=DATE:20280101 SUMMARY:Dark-sky window · 11 moon-free nights DESCRIPTION:11 nights with essentially moon-free dark hours at Gantrisch Da rk Sky Zone\, Switzerland (nightly moon interference ≤ 15% — Moon belo w the horizon for nearly all of astronomical darkness\, or too thin to mat ter).\n\nCloud is the one thing no calendar can promise. When a window get s close\, check the live per-night forecast: https://stellarhound.com/dark -sites/gantrisch-dark-sky-zone-switzerland?utm_source=calendar&utm_medium= ics&utm_campaign=dark-site-windows&utm_content=gantrisch-dark-sky-zone-swi tzerland\n\nRule city-ics-v1 — deterministic moon/darkness geometry\, Sk yfield + JPL DE440s. Not a weather forecast. URL:https://stellarhound.com/dark-sites/gantrisch-dark-sky-zone-switzerland ?utm_source=calendar&utm_medium=ics&utm_campaign=dark-site-windows&utm_con tent=gantrisch-dark-sky-zone-switzerland CATEGORIES:dark-sky-window STATUS:CONFIRMED TRANSP:TRANSPARENT END:VEVENT END:VCALENDAR